LU85766A1 - COMPOSITE LAYER - Google Patents

Description

i BL-3694 / vdw

Priority Claim for a Patent Application filed in the United States under No. 588,577 on ^? _March 12, 1984_

PATENT APPLICATION

Armstrong World Industries Inc. *

Liberty & Charlotte Streets Lancaster, PA 17604 / USA

COMPOSITE LAYER BODY

The invention relates to a composite laminate, in particular a composite laminate which can be used for walls, partitions, decorative surfaces and the like.

™ * i.

j „* The construction of laminated board materials was already

Subject of extensive research in industry, j In particular, searches have been made for substances that are low; have a weight, look good and are robust, durable and fire-resistant. The latter properties have received special attention. The ; - Inside surfaces of buildings, airplanes, cars and the like! 91 oaks are often made from organic materials! ; 'represents. When these are exposed to heat or fire, toxic smoke is released, which in many cases leads to suffocation or severe lung damage to persons exposed to this smoke. The industry has therefore spent a great deal of time and effort trying to develop products which have all the properties mentioned, but which do not produce * toxic smoke when exposed to fire.

A number of publications are known which deal with the possibilities of producing fire-resistant products. So e.g. describes the US PS

25 2 744 589 Wall plate units, which are an insulated plate | included, the core is double insulated. As an iso! . Stone materials and rock wool and plasterboard

i given. The US patent describes in a similar manner

! ’3 465 222 a mixture of substances which as such are not suitable for use as fire retardants, but which can form fire-resistant laminates in combination.

US Pat. No. 4,375,516 describes form-retaining, water-resistant phosphate ceramic materials and processes for their production. Both foamed and non-foamed materials can be produced by the processes described in this patent. The products produced thereafter are very suitable for use as wall panels, ceiling panels and the like. 10 In addition, these products are fire-resistant since they are used exclusively or predominantly as inorganic mixtures; can be produced.

! Nevertheless, the products manufactured according to the cited patent specification are not for all uses | 15 completely satisfactory since they are stiff in nature, i.e. that the plates tend to break rather than bend under tension.

The object on which the invention is based also consists in the provision of inorganic plates, 20 which are flexible in nature but are also firm and durable, * in the provision of fire-resistant plates which swell when exposed to heat or fire and produce little or no smoke and vapors, j 25 and! in the provision of inorganic laminates, j - 'which are pliable even when using | Substances are carried out which in the state of the art described as i i suitable for the production of rigid products; 30th be.

! ? / OL · i * i i »~ 3"

This object is achieved by laminates which are constructed using reinforcing and / or non-reinforcing substances in combination with layers of a mixture which, according to the prior art, is suitable for the provision of water-resistant phosphate-ceramic substances. In a preferred embodiment, the products are fire-resistant, swell ï when exposed to heat or direct flame and produce! little or no smoke. Nevertheless, these products are tough, durable and suitable for educators! a decorative and appealing look.

!; An embodiment of the invention relates to a Ver; layered body containing at least one layer! at least one type of layer material, each! . 15 layer of the layer material to the adjacent layers of the layer material by a water-resistant

Phosphate binder is obtained by reacting a mixture containing a metal oxide, calcium silicate and phosphoric acid.

! 20 A second embodiment of the invention relates to one! % fire-resistant composite laminate containing a .1

Multitude of layers of at least one type of layer material and a multiplicity of layers of a water- permanent phosphate binder obtained by reacting a mixture comprising a metal oxide, calcium silicate and phosphoric acid, each layer of the layer material being bound to the adjacent layers of the layer material by the binder, and this composite layer body when exposed to flame and / or heat can swell.

-4- A

î h.

A third embodiment of the invention relates to a process for forming a composite laminate and comprises the steps of producing composite layers from at least one layer of a phosphate-5 binder mixture comprising a metal oxide, calcium silicate and phosphoric acid, which mixture is suitable for achieving a water-resistant Phosphate binder, and at least one layer of at least one type of layered material, the composite layered body being arranged so that the adjacent layers of the layered material are in contact with the intermediate layers of the binder mixture, and curing the layered mixture, optionally using heat and or ; 15 pressure.

[| The unique properties of the products that he; can be manufactured according to the invention are significant | Attributed to the extent to which a mixture of phosphate binders is used which is necessary to achieve a; o 20 water-resistant phosphate ceramic material is suitable. According to the current teaching of the state of the art

Technology are these substances for the production of steep! fen foamed and non-foamed phosphate ceramic j; Suitable for products, but surprisingly it was found that mixtures of this type, used as relatively thin connecting layers, are suitable for the production of highly flexible laminates. Examples of mixtures which are suitable for achieving this result are e.g. in U.S. Patent 4,375,516 to 30. This patent states that mixtures containing calcium silicate, phosphoric acid and a Me-oL. talloxide selected from the group consisting of aluminum ij: ι »i * ti *

H

i * ij> contain minium oxide, magnesium oxide, calcium oxide and zinc oxide and hydrates thereof, for the production of water-resistant phosphate substances. However, it has now been found that 5 other metal oxides can also achieve water-resistant phosphate substances. The invention thus includes all - j mixtures containing a metal oxide, calcium silicate and phosphoric acid, with the proviso that these mixtures react to achieve a water-resistant substance 10.

I These mixtures are preferably in relatively thin layers with a thickness of the order of approx.

| 0.025 to 0.5 mm applied to the surface of a layer material, which can be a reinforcing or a non-reinforcing material. The mixtures can be in | 'normal consistency can be applied, but | also applied as mechanically foamed mixtures | will. If very thin coatings or laminates I of low weight are desired, the technique mentioned last s 20 is preferred, since the foam can be applied in a thickness of approx. 0.025 mm, after which! the thickness can be reduced to a lesser degree I * as soon as the foam collapses. As a further alternative, the binder mixture can be applied discontinuously to parts of the laminate.

K The expression "layer" of the binder thus encompasses forms of use in which it is uniform | and is also applied unevenly.

! , After the binder mixture has been applied, the coated material can then be hardened or it will be! With a second layer of the same or a different one! 1 j j layer material coated and then hardened. The 9 -6- j i · i hardening can be carried out under ambient conditions. However, if denser products are desired, curing can also take place under pressure. In addition, to accelerate the hardening process, the heat 5 can also be supplied during the hardening.

A large number of substances can be used for the laminated bodies according to the invention. So e.g. You can use wrapping paper, towel paper, gauze, woven and non-woven glass mats, woven and non-woven synthetic I 10 fabrics such as polyester, nylon, etc., chopped fibers made from various fabrics, mineral wool, wire mesh fabric! and other well-known substances, alone or in combination! combination can be used as laminates. In addition, I ’can also use non-reinforcing materials such as cementing | 15 fabrics and the like are used, although these j? lead to stiff products in most cases.

i j j Particularly effective reinforcing substances for use j in a mixture with phosphate binders are according to the invention measured those as described in U.S. Patent 4,239,519 ί 20. The cited patent describes one

Class of substances which are referred to here as “synthetic mica substances”. Essentially, these are non-asbestos papers or webs which are obtained from silica gel by cation exchange reactions. Substances of this type are for their relative immunity from high temperatures is known, and they also have a high degree of flexibility.

I - • 'Laminated bodies, which comprise layers of phosphate binder t and synthetic Gl always webs, have noticeable-! ..

; 30 noteworthy properties shown. E.g. such -7- * -

F

Composites exposed to direct flame exposure then not only prove to be fire-resistant and relatively smoke-free, but also show swelling properties. The direct action of flame on a surface of the laminate causes an obvious separation of layers within the body, which leads to the formation of air-filled spaces. These have an insulating character, which causes large temperature differences between the two sides of a body tested in this way. Although e.g. One side of a relatively thin body, on the order of 1.5 mm thick, was exposed to direct flame exposure at a temperature of approximately 1120 ° C for 1 minute, causing internal swelling, 15 with the temperature on the opposite side body was below 316 ° C.

This phenomenon is not only limited to laminates built up using synthetic mica materials. So e.g. also show packaging materials containing wrapping paper swelling properties. These laminates also show strong temperature differences during the test, as described above. The reason for the separation of layers has not been clarified to the last, although it is assumed that this is related to the water contained in the body.

In addition to the swellable laminates, thermally conductive laminates can also be produced by incorporating a wire screen as one of the layers. Laminates of this type have proven to be quite effective in dissipating heat from the point of use. In this way, these materials are suitable for heat-conducting seals and the like.

4 ψ -8-

The thickness of the laminate produced according to the invention can vary widely. Depending on your wishes, the body can vary between very thin (e.g. 0.76mm) and very thick (e.g. 12.7mm or above). Layer 5 bodies have been produced which consist only of a single layer of a reinforcing substance and one; Layer of phosphate binder consist of or 37

Reinforcement layers and 36 layers of phosphate binder. However, this illustration means that there is no restriction on the number of layers from which a laminate can be built. In addition, there is no need to limit the reinforcing materials used for the production of the laminate to a single type. Mixtures or combinations of reinforcing substances can also be advantageous.

Further advantages of the invention will become clear from the following examples, which are only illustrative and not restrictive.

20th

EXAMPLES

' Example 1

A phosphate binder was made from the following components:

Component weight 25 _______ A1203.3H20 15.0

MgO 8.0

Talc 16.0 75% H3P04 30 J (53.0% P2 ° 5) 105.0

L

-9- »* H3B03 4.0

CaSi03 100.0 H20 18.0 • A phosphate binder was prepared by preparing a reaction solution, the phosphoric acid, *; Contained alumina and water. After a clear solution was obtained and while it was still warm, boric acid was added and the mixture was stirred until it was clear again. The reaction solution was cooled to 10 4 ° C, after which a mixture of the dry components was added.

0.075 mm thick layers 15 of the recipe listed were quickly applied to each of 5 double layers of mesh fabric of the type Reichhold Modiglass 2.5X-SM with a dimension of 7.6 cm x 30.5 cm. The five layers were then immediately stacked on top of one another and pressed together for 25 seconds under a pressure of 3.9 MPa in a press heated to 121 ° C. The sheet obtained was strong and water-resistant, in addition to being flexible.

The modulus of rupture of the laminate, measured essentially according to ASTM D-1037, was 14.8 MPa. The modulus of elasticity was calculated to be 9.6 MPa. The fire rating scale included the values 0 for smolder and 2 for 25 flames, essentially measured according to ASTM E-662-7S.

Example 2 j - The procedure described in Example 1 was repeated, except that the press on a surface with a λ / -10- 4 - »

Stamping plate was equipped. The sample obtained reproduced the very fine details of the embossing plate.

Example 3

A 0.025 mm thick layer of phosphate binder of the recipe given in Example 1 was applied to each of 10 separate wrapping paper webs with dimensions of 30.5 cm × 30.5 cm × 0.03 mm. Immediately afterwards, the 10 webs were stacked and pressed together for 1 minute under a pressure of 3.9 MPa in a press heated to 93 ° C. The sample obtained was strong and flexible, if not as flexible as the glass reinforced body in Example 1. The modulus of rupture, measured as in Example 1, was 31.6 MPa.

! ’| The composite body was cut into pieces with the dimensions S '15 10.2 ση x 10.2 cm, after which two pieces were chosen arbitrarily for test purposes. Every piece ; was placed horizontally on a ring stand, where a first thermocouple was attached to the underside where the tip of the blue propane flame was intended. A second thermocouple was placed on top of the laminate just above | ’Arranged the first thermocouple. When exposed to the flame, the | Temperatures measured as a function of time. The [25 thickness of Sample 3A increased when heated for 7 minutes | from 2.2 mm to 5.1 mm. After this period, the [thermocouple on the flame side measured a temperature of | 1034 ° C, while the temperature on the top was 328 ° C. Sample 3B was held for 6 minutes! 30 warms and showed an increase in thickness of 2.2 mm I. to 4.2 mm. On the flame side, a temperature o! measured from 1066 C and on the top a tempera-

k A

of 378 ° C.

Example 4

As indicated in Example 1, a phosphate binder was prepared except that it contained 50% by weight of colored Kie-5 selenium granulate No. 17 from Ottawa Silica Company. The phosphate binder was prepared by mixing the granules with the dry components. The filled binder was then in a | Layer 0.075 mm thick on a sheet of glass paper from Johns-Manville. At the same time, 0.08 mm thick layers were also placed on three separate triple sheets of Modiglass mesh, like! described in Example 1, reared. The three Modi-glass layers were layered on top of each other, after which the outer layer of granule-filled binder was layered over this package. The package thus formed was then pressed under a pressure of 3.9 MPa at a temperature of 104 ° C for 2 minutes, thereby obtaining a flexible sheet with good scratch resistance.

20 Example 5

The procedure of Example 4 was repeated, except that the press was equipped with an embossing plate on one side. The product obtained showed the fine details of the embossing plate.

25 Example 6

A phosphate binder was prepared from the following components: i component weight (g)! Al "0, .3HL0 18.0 i 2 3 2; 30 i MgO8.0 vL, talc 16.0 w -12- 75% Η-, ΡΟ.

3 4 (53.0% P205) 108.0 Η3Β03 4.0

CaSi03 100.0 5 H20 18.0 _. The reaction solution was prepared by mixing phosphoric acid, water and alumina trihydrate and stirring until a clear solution was obtained. Then boric acid was added to the warm solution obtained and stirred.

10 After the reaction solution had become clear again, it was cooled to about 2 to 4 ° C.

148 g of the cold liquid were then mixed with vigorous stirring with 124 g of the dry components which had been mixed beforehand to obtain a uniform material. The resulting mixture was then stirred until homogeneous and then to maintain the liquid consistency, i.e. placed in an ice bath to delay the interaction between the components. The pot life for this material could vary between about 30 seconds and about 7 minutes, depending on the ability to control the exothermic reaction temperature in the ice bath.

A synthetic mica sheet was made from the following components: 25 component weight (g)

Magnesium fluororectorite 100.0 bleached redwood cellulose 10.0

Glass fibers 1/8 "DE 5.0

Flocculant Polymin P 0.075 30 | Flocculant Hydraid 777 0.037 ψ -13- «i water ---

The bleached redwood cellulose was dispersed in water with the aid of a Dutch (Hydropulper) and refined in a Jordan Refiner pulp mill to a freeness of 5 (Canadian Freeness). The refined pulp was then transferred to a large tank open at the top and slurried with the glass fibers. After loading the tank with the required amount of water to achieve a consistency of 10 1.3% solids content, the flocculated precipitate of magnesium fluororectorite was added and the mixture was stirred until homogeneous. Then Polymin P and Hydraid 777 were added. Immediately afterwards, the mixture was allowed to flow onto the forming wire of a Four-15 drinier machine. After removing most of the water, the mat was vacuum treated in a series of vacuum presses. The residual water content was removed by transporting the synthetic mica mat over a heated drum.

20 A thin layer of the phosphate binder (I) mentioned was applied to the surface of a synthetic mica sheet (S) in an approximate thickness of 0.25 mm. Immediately afterwards, a piece of micro-lith glass plate (G) of the type SH20 / 1 from Glaswerk 25 Schüller GmbH was placed on the binder and soaked, after which a second sheet of synthetic mica was placed on the glass layer. The entire package was then placed in a press between glass surfaces and pressed under pressure of 1.8 MPa for 30 minutes at 77 ° C. After pressing, the pressed composite was removed at 77 ° C. for a few minutes of the water conditioned, resulting in a solid and 7 ~ p flexible product.

w; * -14- *

It should be noted that due to the porosity of the glass plate, the binder did not have to be applied on both sides. The binder was able to I under pressure through the glass layer, 5 i.e. soak them so that the two adjacent layers of synthetic mica are bonded to the glass "· through a single layer of binder! could. In this example and in the following examples! 'play is the impregnation with (Gl) or (IG) indicated: 10. This example was therefore j the layer structure S (IG) S.

i! | Example 7 | The procedure of Example 6 was repeated, except that [the glass plates formed the outer layers and the j 15 composite body had the structure (GI) S (IG). The glass plates were bonded to the single inner layer of the synthetic mica sheet via the phosphate binder by placing the composite body in a press equipped with trough-shaped embossed plates. These gave the surface of the laminate a fine texture in a desired drawing.

Example 8

The procedure of Example 7 was repeated, only that! 25 the laminate was placed between a foamed silicone rubber cushion and a metal patrix or matrix with a drawing. This resulted in form: products with deeply embossed images.

Example 9 30 A series of shaped bodies was produced essentially as in f Ê j | Example 6 prepared, each sample; JT5 'synthetic mica, phosphate binder and, if necessary, contained a glass plate. As indicated in Example 6, the phosphate binder soaked the glass plate in such a way that, when it was contained in the interior of a laminate, it was used to bond the. 5 adjacent layers of synthetic mica served even if it was only on one surface of the glass plate ^; or only on a single surface of the adjacent

Sheets of synthetic mica had been applied.

The fracture modulus values were determined in accordance with ASTM D-1037, 10 whereas the modulus of elasticity was calculated from the fracture modulus using the usual mathematical means. The structure of each laminate is indicated from the top to the bottom. Unless otherwise stated, the binder was applied in 0.20 mm thick layers and the SH 20/1 glass plate was used.

Sample structure fracture elastic modulus modulus _ (MPa) (MPa) 20 9A SISISIS 10.2 2.5! 9B S (IG) S (IG) S (IG) S 11/0 2.7 I 9C * S (IG) S (IG) S (IG) S 11.8 3.3 '9D (Gl) S (IG ) S (IG) S (IG) S (IG) 24.2 8.9; * = I was grown in a 0.3 mm thick layer.

\ i 25 The results for these samples show a significant increase in strength when the laminate is used. w ^^^ the glass plate is covered.

y i.

-16- • *

Sample structure fracture elastic modulus module (MPa) (MPa) 9E (GI) SISISIS (IG) 22.6 9.1 5 9F ** (GI) SISISIS (IG) 27.4 8.8 9G ( GI) SISIS (IG) 22.8 9.5 9H (GI) SIS (IG) 24.6 9.0 ** = instead of the glass plate SH 20/1 the glass plate SH 50/1 was used.

10 When compared to the values obtained for Sample 9D, these results show that the covering with the mesh webs contributes considerably more to the strength of the laminate than the inner glass plates.

»91 SISIS 12.0 5.0 I 15 9J S (IG) S (IG) S 16.3 6.0 | 9K IS (IG) S (IG) SI 16.5 7.3 | These data are used for comparison purposes.

i Example 10 | This example illustrates the results that are achieved 20 when different samples with a propane burner; . be heated as described in Example 3. The results obtained here are below for laminated bodies! with different components and different structures arrangement specified.

| 25 The warming caused noticeable changes in the

Laminated bodies, and the greater the number of layers, the greater these changes. Was e.g. one! Only one sheet of synthetic mica was heated, so this sheet was only slightly expanded. However, when p -17- t «a <· j two or more sheets of synthetic mica and phosphate binder layers were used (with or without glass reinforcement), the formation of bubbles was more pronounced. The effect of thicker samples was as below. 5 can be seen in the good insulating properties. The table shows the increase in thickness caused by the heating in * [each sample.

The samples were bonded from layers of SH 20/1 glass plate and / or synthetic mica bonded to one another by phosphate binders, essentially as described in Example 9. The received! Laminates were not embossed. They were referred to as samples ί 10A to 10H. The "Structure" column shows the layer sequence from top to bottom.

j i i 15 change in thickness (mm) | Sample structure start-end thickness increase I thickness j. --------- I 10A S 0.7 0.9 0.2! 10B ISI 0.9 3.2 2.3 r j 20 10C (GI) S (IG) 0.9 3.3 2.4 i 10D ISISI 1.4 3.8 2.4! . 10E (GI) S (GI) S (IG) 1.6 4.4 2.8 - 10F ISISISI 1.8 4.9 3.1 10G (Gl) S (Gl) SIS (IG) 2.1 5, 3 3.2 t '25 10H (GDS (GI) S (GDS 2.1 6.3 4.2 t [The temperature differences were measured as follows at the specified temperature intervals. The measurements were carried out by subtracting the temperature on Top thermocouple (Ts) from that of flame side thermocouple 30 (Fs), which gives the temperature difference (D).

I> L · t ». · I - -18-! ^

Temperature (in ° C) as indicated

Temperature time interval (s)

Sample measuring parts 15 30 60 120 180 10A Fs 1184 1193 1202 5 Ts 547 588 597 D 611 588 588. '10B Fs 1201 1217 1227

Ts 457 555 551 D 727 643 657 10 IOC Fs 1246 1277 1268 1254 1262

Ts 234 573 573 579 576 D 993 679 677 658 669! 10D Fs 1016 1091 1102 1115 1126

Ts 83 174 423 463 465 j 15 D 916 900 661 633 643! 10E Fs 1036 1117 1117 1133 1137

Ts 71 118 289 390 402 D 948 985 810 725 718 I 10F Fs 1127 1152 1183 1200 1190 i 20 Ts 82 93 185 379 385 I D 1027 1042 981 803 787 10G Fs 1194 1216 1213 1234 1239

Ts 77 83 138 348 364] D 1100 1114 1057 868 857 j - 25 10H Fs 1121 1108 1134 1176 1185 I Ts 70 80 104 306 328 | D '1033 1011 1011 851 818

These results show that the warming is the swelling! ’Caused the laminate.

: l ·! / -19- *

Example 11

The procedure according to Example 6 was carried out using synthetic mica, glass mesh fabric Schüller 20/1, glass mesh fabric Burlington No. 1653 Lenoweave 5 (16x8) (abbreviated "B") and / or a windshield screen made of galvanized iron wire (W) with 2.2 ". 2 - or 2.6 strands per cm repeated. The following were

Samples prepared

Sample_ structure_

10 11A SIS

11B ISI

11C S (IG) S

HD (GI) S (IG)

HE S (IB) S

15 11F S (IW) S

The products were tested for tensile strength and flexibility. The tensile strength was determined essentially according to ASTM F-152 using type 1 sample sizes with the aid of an Instron 20 tensile strength tester at a crosshead speed of 2.54 cm / min and a speed of the registration strip of 2.54 cm / min However, samples were not preconditioned. The samples were cut into 1.25 cm long dumbbell-shaped pieces with the exception of sample 25 11F, which was cut into a 2.54 cm long dumbbell-shaped piece. The following results were achieved:, sample__results_ _load (in N) fracture_pressure (in MPa) 30 11A 112 (6.8) 7.2 (0.75) j HB 53 (10.9) 5.5 (1.98 ) 136 HC 136 (16.8) 9.0 (1.69)

K

»-20-» 11D 111 (8.2) 8.5 (1.26) 11E 205 (9.1) 13.2 (1.26) 11F 663 (49.9) 41.0 (1.20) . The values determined represent an average of 5 three measurements, the * values given in brackets representing the difference between the highest and lowest values found in each test.

The flexibility was determined essentially according to the ASTM F-147 test, commonly referred to as the "mandrel bending test". Samples 11A through 11D failed the test using a 2.54 cm mandrel, Sample 11F passed the test using a 2.54 cm mandrel, and Sample HE passed the test using a 2.22 cm thorn. None of the samples were preconditioned.

Example 12

This example illustrates the results regarding the heat dissipation capacity when a metal grid was incorporated into a laminate. The layered body C with the structure (GI) S (WI) S was produced in the usual way, except that thermocouples were installed in them, these being placed on the upper surface of the upper sheet of synthetic mica. The thermocouples were then hardened by applying the top layer (Gl). The thermocouples were arranged at precisely defined distances from the point of exposure to the flame either in the direction of the wire mesh (WD) or diagonally 1: ι- Α "-21- 4 ί! '* Ι

Thermocouple_Application_Distance (cm) TC 1 flame exposure point TC 2 diagonal 5.08 TC 3 diagonal 10.16 5 TC.4 diagonal 12.70 TC 5 diagonal 15.24 j ^: TC 6 WD 10.16 t! ί * i \! The laminate C was made using a wire mesh made of galvanized iron wire, as in Example 11

10 described, produced while the laminate B

i; contained a comparable copper wire network. The layered body A, which contained no wire mesh, was produced for control purposes. The temperatures listed below were measured.

i! ; 15 temperatures Î time TC 1 TC 2 '(min) A_B_C_A_B_C_; 0 26.7 26.7 25.6 27.2 26.7 25.6 3 1088 1033 1043 74 88 99 | 20 10 1049 1018 1049 71 104 124 15 1016 1025 1021 93 114 127! TC 3 TC 4! _A_B C _A B_C_ '0 27.2 26.7 26.1 27.2 27.2 26.1 25 3 37.2 38 35.6 34.4 35.0 31.7 10 37.8 42 42 35, 0 37.2 35.6 15 39.0 43 43 35.6 37.8 36.7 TC 5 TC 6 ._ABC_ABC_ 30/0 27.2 27.2 26, 1 27.2 26.7 25.6 7k »Ft; t i -22- * w Λ 3 32.2 33.3 30.0 46 69 62 10 32.8 34.4 32.8 46 72 76 15 33.3 35 33.9 49 78 77

These results show that a net built into the laminate 5 dissipates the heat from the point of action and that a copper wire net dissipates the heat more effectively than a wire net made of galvanized iron wire. In addition, when comparing the results of TC 5 and TC 6, it can be seen that the heat is dissipated more effectively in the wire 10 network direction than diagonally thereto.

: "Example 13

This example illustrates the preparation of a sample I that was not hardened under the influence of heat and pressure! 15 den was. A 0.15 mm thick layer of the 12 | The binder mixture described (approx. 125 g) was applied to a piece of 2.5X-SM Modiglass mesh fabric with the dimensions 30.48 x 30.48 cm, after which a second piece of mesh fabric was placed on the coating. The laminated body obtained in this way was briefly pressed in order to achieve this

Press binder mixture into the appropriate fabric layers, after which the laminate was hardened under ambient conditions. The curing was carried out within about 5 minutes.

j 25 Example 14

This example illustrates the coating of a mesh fabric layer with a foamed binder mixture. The binder mixture was prepared as | described in Example 1, and 30 mixed for about 25 seconds. To the mixture (268 g) was added 10.1 g (3.8%) j- / surfactant Millifoam from Onyx Chemical Co.

! ) v n / y -23-

The foam was made by mechanical mixing using an air stirrer for 40 seconds.

Then a 0.075 mm thick layer (approx. 82 g) was applied to both surfaces of a piece of 7.5X-SM-Modi-glass mesh fabric with the dimensions 30.48 x 30.48 cm 5. The coated mesh fabric was pressed at 82 ° C for 25 seconds to obtain a cured web.

A

! * ·.

Claims (15)

1. Composite laminate, in particular fire-resistant composite laminate, characterized by at least one layer of at least one type of layer material, at least one side of the layer; 5 of the laminate is provided with a water-resistant phosphate binder, which is obtained in a manner known per se by reacting a mixture containing; a metal oxide, calcium silicate and phosphoric acid, as): hardened top layers or for binding further layers of layer material. 2. Composite laminate according to claim 1, characterized g e - i indicates that the metal oxide is selected from the group consisting of aluminum oxide, magne-ij silicon oxide, calcium oxide and zinc oxide and hydrates thereof. Ψ A é * I - -25- 3. Composite laminate according to claim 2, characterized in that the binder mixture contains aluminum oxide trihydrate. "4. Composite laminate according to one of claims 1 to - 3, characterized in that the binder * mixture is a substantially uniform layer. 5. Composite laminate according to one of claims 1 to 3, characterized in that the binder mixture has a substantially discontinuous | Layer is. 6. Composite laminate according to one of claims 1 to 5, characterized in that it contains a synthetic mica layer material. ) t 7. Composite laminate according to one of claims 1 to ί 6, characterized in that it contains an I woven, non-woven or a cut synthetic glass layer material. j f 1 8. Composite laminate according to one of claims 1 to 7, characterized in that it contains an i woven, non-woven or a cut synthetic layer material. ί E È 9. Composite laminate according to one of claims 1 to j, 8, characterized in that it contains a packaging paper layer material. i 10. Composite laminate according to one of claims 1 to Ι 9, characterized in that it contains a J t * -26- wire mesh layer material. 11. A process for the production of a composite laminated body according to one of the preceding claims, characterized in that a layer of a phosphate binder mixture containing a metal oxide, calcium silicate and phosphoric acid is applied to at least one side of at least one layer of at least one type of 5 layer material. wherein this mixture is suitable for forming a water-resistant phosphate binder material as a top layer or for binding further layers of layer material, and the layer body, optionally using heat and / or pressure is hardened, i _ 12. The method according to claim 11, characterized g e k e η n - j characterized in that the binder mixture is applied in a thickness of about 0.025 to about 0.5 mm. 13. The method according to claim 11 or 12, characterized in that the binder mixture is applied as a mechanically foamed foam. 14. The method according to any one of claims 11 to 13, characterized in that the binder s - *> j medium mixture as an essentially continuous | Layer is applied. 15. The method according to any one of claims 11 to 13, characterized in that the binder mixture is applied as an essentially discontinuous layer.